<template lang="">
  <div>
    <el-row type="flex" justify="end">
      <el-select @change="dateChange" v-model="currentYear" size="small" style="width: 120px">
        <el-option v-for="(item,index) in yearList" :key="index" :label="item" :value="item">
        </el-option>
      </el-select>
      <el-select @change="dateChange" v-model="currentMonth" size="small" style="width: 120px; margin-left:10px">
        <el-option v-for="item in 12" :key="item" :label="item" :value="item">
        </el-option>
      </el-select>
    </el-row>
    <el-calendar v-model="currentDate">
      <template v-slot:dateCell="{date, data}">
        <div class="date-content">
          <span class="text">{{data.day |getDay}}</span>
          <span v-if="isWeek(date)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>
</template>
<script>
  export default {
    props: {
      startDate: {
        type: Date,
        default: () => new Date()
      }
    },
    filters: {
      getDay (value) {
        const day = value.split('-')[2]
        return day.startsWith('0') ? day.substr(1) : day
      }
    },
    data () {
      return {
        currentMonth: null, // 当前月份
        currentYear: null, // 当前年份
        currentDate: null,
        yearList: []  //要遍历的年的数组
      }
    },
    methods: {
      dateChange () {
        const year = this.currentYear
        const month = this.currentMonth
        let day = 1
        if (year === new Date().getFullYear()) {
          day = new Date().getDate()
        }
        this.currentDate = `${year}-${month}-${day}`
      },
      isWeek (value) {
        if (value.getDay() == 6 || value.getDay() == 0) {
          return true
        }
        return false
      }
    },
    created () {
      this.currentYear = this.startDate.getFullYear()
      this.currentMonth = this.startDate.getMonth() + 1
      this.yearList = Array.from(Array(11), (value, index) => { return this.currentYear + index - 5 })
      this.dateChange()
    },
    watch: {
      currentYear (newDate) {
        this.yearList = Array.from(Array(11), (value, index) => { return this.currentYear + index - 5 })
      }
    }
  }
</script>
<style scoped>
  /deep/ .el-calendar-day {
    height: auto;
  }

  /deep/ .el-calendar-table__row td,
  /deep/ .el-calendar-table tr td:first-child,
  /deep/ .el-calendar-table__row td.prev {
    border: none;
  }

  .date-content {
    height: 40px;
    text-align: center;
    line-height: 40px;
    font-size: 14px;
  }

  .date-content .rest {
    color: #fff;
    border-radius: 50%;
    background: rgb(250, 124, 77);
    width: 20px;
    height: 20px;
    line-height: 20px;
    display: inline-block;
    font-size: 12px;
    margin-left: 10px;
  }

  .date-content .text {
    width: 20px;
    height: 20px;
    line-height: 20px;
    display: inline-block;

  }

  /deep/ .el-calendar-table td.is-selected .text {
    background: #409eff;
    color: #fff;
    border-radius: 50%;
  }

  /deep/ .el-calendar__header {
    display: none
  }
</style>